Asymmetric reduction of 1-methylsulfonylalkan-2-ones with baker’s yeast
作者:Anita R. Maguire、Declan G. Lowney
DOI:10.1039/a605132d
日期:——
Bakerâs yeast mediated enantioselective reduction of
1-methylsulfonylalkan-2-ones, forming the corresponding alcohols with up to
87% ee, is described.
Enantioselective copper catalysed intramolecular C–H insertion reactions of α-diazo-β-keto sulfones, α-diazo-β-keto phosphine oxides and 2-diazo-1,3-diketones; the influence of the carbene substituent
作者:Amy E. Shiely、Catherine N. Slattery、Alan Ford、Kevin S. Eccles、Simon E. Lawrence、Anita R. Maguire
DOI:10.1039/c7ob00214a
日期:——
Enantioselectivities in C–H insertionreactions, employing the copper-bis(oxazoline)-NaBARF catalyst system, leading to cyclopentanones are highest with sulfonyl substituents on the carbene carbon, and furthermore, the impact is enhanced by increased steric demand on the sulfonyl substituent (up to 91%ee). Enantioselective intramolecular C–H insertionreactions of α-diazo-β-keto phosphine oxides and